diff --git a/Git/Types.hs b/Git/Types.hs
--- a/Git/Types.hs
+++ b/Git/Types.hs
@@ -202,7 +202,7 @@
 --     show (TreeEntry oid)   = "<TreeEntry " ++ show oid ++ ">"
 --     show (CommitEntry oid) = "<CommitEntry " ++ show oid ++ ">"
 
-treeEntryToOid :: MonadGit r m => TreeEntry r -> Oid r
+treeEntryToOid :: TreeEntry r -> Oid r
 treeEntryToOid (BlobEntry boid _) = untag boid
 treeEntryToOid (TreeEntry toid)   = untag toid
 treeEntryToOid (CommitEntry coid) = untag coid
diff --git a/gitlib.cabal b/gitlib.cabal
--- a/gitlib.cabal
+++ b/gitlib.cabal
@@ -1,5 +1,5 @@
 Name:                gitlib
-Version:             3.1.0
+Version:             3.1.0.1
 Synopsis:            API library for working with Git repositories
 License-file:        LICENSE
 License:             MIT